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ACRS Thermo-Hydraulic Phenomena Subcommittee Meeting - September 26-27, 2001

ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
THERMAL-HYDRAULIC PHENOMENA SUBCOMMITTEE MEETING:
DUANE ARNOLD ENERGY CENTER POWER UPRATE REQUEST,
SEPTEMBER 26-27, 2001
ROCKVILLE, MARYLAND

PRESENTATION SCHEDULE

Contact: P. Boehnert (301/415-8065)
("pab2@nrc.gov")

September 26, 2001

  TOPIC PRESENTER TIME
I. Opening Remarks G. Wallis, Chairman,
D. Powers, ACRS
Cognizant Member
1:00 p.m.
II. Duane Arnold Power Uprate    
  A. NMC Presentations
(Open/Closed?)
NMC/GE Nuclear Energy 1:15 p.m.
    1. Introduction
    2. Plant Changes to Accommodate Power Uprate
    3. Compliance with Regulatory Requirements
    - Hardware Modifications
- Analyses Performed
- Impact on Plant Margins
    4. Response to ACRS Questions:
    - Plant Operator Training
- Stability Monitor/Instability Avoidance
- ATWS Event Response for Uprate Conditions
- Fuel response for ATWS/Power Excursions
- Material Degradation Issues
- Impact on Containment Drywell/Wetwell Temperature Limits
- Impact of Uprate on Steam Separator/Dryer System
    5. ECCS Analyses
    - Methodology
- Results
    6. PRA Analyses
    - Analyses Performed/Results
(CDF LERF, CDFs & LERFs, Associated Uncertainties(1))
- Evaluation of Missing PRA Elements(2)
(e.g., fire, seismic, shutdown risk)
    7. Resolution of Open Issues
    8. Concluding Remarks
III. Recess   5:00 p.m.
September 27, 2001
IV. Reconvene D. Powers, ACRS
Cognizant Member
8:30 a.m.
V. Duane Arnold Power Uprate (Cont.)    
  B. NRR Presentations (Open) NRR 8:40 a.m.
    1. Introduction    
    2. NRR SER Results/Response to ACRS Questions    
    - PRA Analyses/Evaluation Of Licensee's PRA Examinations
- Audits of Licensee's Code Calculations
- Evaluation of ATWS Response
- Material Degradation Issues
- Impact on Plant Margins
   
    3. Open Issues    
    4. Concluding Remarks    
  C. Subcommittee Caucus (Open)   11:45 a.m.
    1. Comments on Meeting Presentations  
    2. Follow-on Actions    
    3. Decision to Bring Review to ACRS    
VI. Adjourn   12:00 p.m.

1. If uncertainty evaluations not performed, provide a qualitative discussion of this matter.

2. If quantitative analyses not available, provide rigorous qualitative arguments.

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